Restructuring, Discontinued Operations, and Other (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Restructuring, discontinued operations, and other
Closure costs	$ 2,135,000
Accelerated depreciation on equipment	35,700,000
Certain condensed consolidated statements of operations information for discontinued operations
Earnings from discontinued operations, net of taxes	67,000	8,218,000
Net earnings per share - basic and diluted (in dollars per share)	$ 0.00	$ 0.17
Restructuring activities related to discontinued operations
Net pre-tax charges recognized related to restructuring activities	2,135,000
Sale of Print & Color brands and Brokaw Mill closure
Restructuring, discontinued operations, and other
Closure costs		3,428,000
Impairment charges		2,100,000
Certain condensed consolidated statements of operations information for discontinued operations
Net sales		41,540,000
Earnings from discontinued operations before income taxes	106,000	13,043,000
Provision for income taxes	39,000	4,825,000
Earnings from discontinued operations, net of taxes	67,000	8,218,000
Net earnings per share - basic and diluted (in dollars per share)	$ 0.00	$ 0.17
Restructuring activities related to discontinued operations
Net pre-tax charges recognized related to restructuring activities		3,428,000
Liabilities for restructuring expenses
Balance at the beginning of the period	48,000
Payments/ Usage	(48,000)
Sale of Print & Color brands and Brokaw Mill closure | Impairment of long-lived assets
Restructuring, discontinued operations, and other
Closure costs		2,075,000
Restructuring activities related to discontinued operations
Net pre-tax charges recognized related to restructuring activities		2,075,000
Sale of Print & Color brands and Brokaw Mill closure | Severance and benefit continuation
Restructuring, discontinued operations, and other
Closure costs		1,108,000
Restructuring activities related to discontinued operations
Net pre-tax charges recognized related to restructuring activities		1,108,000
Liabilities for restructuring expenses
Balance at the beginning of the period	26,000
Payments/ Usage	(26,000)
Sale of Print & Color brands and Brokaw Mill closure | Other associated costs, net
Restructuring, discontinued operations, and other
Closure costs		245,000
Restructuring activities related to discontinued operations
Net pre-tax charges recognized related to restructuring activities		245,000
Sale of Print & Color brands and Brokaw Mill closure | Contract termination and other
Liabilities for restructuring expenses
Balance at the beginning of the period	22,000
Payments/ Usage	(22,000)
Sale of Print & Color brands
Restructuring, discontinued operations, and other
Pre-tax gain on sale and disposal of discontinued operations		12,200,000
Closure of Brokaw paper mill
Components of assets and liabilities that are classified as discontinued operations
Assets classified under discontinued operations	0
Liabilities classified under discontinued operations	200,000
Liabilities for restructuring expenses
Additional pre-tax closure charges expected to be incurred during the remainder of 2013	0
Closure of Brainerd Mill
Restructuring, discontinued operations, and other
Cost of sales	42,200,000
Closure costs	2,100,000
Accelerated depreciation on equipment	35,716,000
Inventory, spare parts, and other writedowns	6,712,000
Severance and benefit continuation costs	1,369,000
Other associated costs	532,000
Total	44,329,000
Additional pre-tax closure charges expected to be incurred during the remainder of 2013	1,300,000
Restructuring activities related to discontinued operations
Net pre-tax charges recognized related to restructuring activities	2,100,000
Liabilities for restructuring expenses
Reserve Provisions	1,879,000
Balance at the end of the period	1,879,000
Closure of Brainerd Mill | Severance and benefit continuation
Liabilities for restructuring expenses
Reserve Provisions	1,369,000
Balance at the end of the period	1,369,000
Closure of Brainerd Mill | Contract termination and other
Liabilities for restructuring expenses
Reserve Provisions	510,000
Balance at the end of the period	510,000
Groveton, New Hampshire mill | Contract termination
Restructuring, discontinued operations, and other
Closure costs		3,300,000
Restructuring activities related to discontinued operations
Net pre-tax charges recognized related to restructuring activities		3,300,000
Restructuring expenses recorded	200,000
Liabilities for restructuring expenses
Payments/ Usage	500,000
Restructuring expenses recorded	200,000
Restructuring reserve, current	2,400,000		2,300,000
Restructuring reserve, noncurrent	$ 9,400,000		$ 9,800,000